I wonder if they'll have necro and witch doctor classes? Seems unlikely, but in the Diablo novels, the Necro seems so be a really important class. I can't see blizzard just dropping them entirely. Unless they have some necro NPC's in there just to try and stay true to the lore. Could be added in an x-pac too. Witch doctor seems more similar to the druid than the necro to me. Kinda a combination of the 2 actually.

The Avatar could shapeshift into a demon or an angel (imagine the wings exploding out of his/her back) and cast interesting channeling rituals which take time and effort to prepare but have devastating effect.

Well, I'm sure there will be a Paladin, mage and amazon classes left, but they'll come in as hybrids.

The only think I could think of though is mixing the amazon with the druid. That leads to Hunter type of class, so with the help of wolves and such, and being able to set traps, I think it would make a pretty kickass class.

The Avatar could shapeshift into a demon or an angel (imagine the wings exploding out of his/her back) and cast interesting channeling rituals which take time and effort to prepare but have devastating effect.

Well, basically for the whole elemental thing. It'll just be a sorcerer/sorceress with 4 different branches of skills. Fire, Ice, Earth, Wind.

Spotted these in Cain's Journal, hopefully it's playable class character since the design is really cool. Maybe the class could have a sort of evil/good duality to it, since one set looks all bad-ass while the other is clearly angelic.

The Avatar could shapeshift into a demon or an angel (imagine the wings exploding out of his/her back) and cast interesting channeling rituals which take time and effort to prepare but have devastating effect.

Spotted these in Cain's Journal, hopefully it's playable class character since the design is really cool. Maybe the class could have a sort of evil/good duality to it, since one set looks all bad-ass while the other is clearly angelic.

I'm expecting some sort of dark/evil/demonic paladin. Perhaps a combination of the Paladin and Druid (at least in function), with auras, short to medium ranged spells, demonic transformation and a small number of pets similar to the Druid's vines/spirits. Could have a mana --> life theme.

Maybe a hybrid of the Amazon and Sorceress, a mystical skirmisher that channels spells through ranged weapons.

A telekinetic/psychic character would be awesome. Abilities could include teleportation, magic negation, friendly movement/attack speed buffs and similar debuffs for enemies, combined with nova attacks and "thorns" effects. Could have a life --> mana theme.

Lol, Paladin and some sorta rogue class have a huge chance of returning.

But seriously, some of you guys cannot say the witch doctor is replacing the druid. They resemble the necros a lot more considering the type of skills they use. So I know a lot of you like necros (my fav class is the druid, but I love summoning skeletons, having 20 by yours side is too awesome), but they may or may not make a return. The poison spot has been taken already, so we'll have to see.

As for druid, I really like the idea of shapeshifting. I think they may make a return, or another hippie class similar to them. I really love the idea of being able to transform into a more brutal demonic form. But since Demon Witch is already some sorta summoner. The return of necro's will either mean druids will not be available, or the durids were altered into some sorta hippie class that turns into stuff. But if a druid is announced, chances are, necros won't make a return.